
Oslo township
- County:
- Brookings County
- County Seat:
- No
- Area (mi²):
- 35.614
- State:
- South Dakota
Oslo township is located in Brookings County, South Dakota. Oslo township has a 2025 population of 222. Oslo township is currently growing at a rate of 0.45% annually and its population has increased by 5.71% since the most recent census, which recorded a population of 210 in 2020.
The average household income in Oslo township is $68,481 with a poverty rate of 0%. The median age in Oslo township is 28.9 years: 28.5 years for males, and 30.9 years for females.